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Finding the Fourth Proportional to 491,271.20, 736,906.80 and 485,050.40

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Solution

The fourth proportional to 491,271.20, 736,906.80 and 485,050.40 is: 727,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,271.20 : 736,906.80 = 485,050.40 : x
  2. Step 2: Convert to fraction form
    491,271.20/736,906.80 = 485,050.40/x
  3. Step 3: Cross multiply
    491,271.20x = 736,906.80 × 485,050.40
  4. Step 4: Simplify right side
    491,271.20x = 357,436,938,102.72
  5. Step 5: Solve for x
    x = 357,436,938,102.72/491,271.20
  6. Step 6: Final answer
    x = 727,575.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.